Henry zeng



marian srarns ramena ortica.

HENRY ZEIJ'G, 0F ELIZABETHIORT, NEW' JERSEY.

PUMP.

Specification of Letters Patent No. 21,043, dated July 27', 1858i.

T0 all whom t may concern:

Be it known that I, HENRY Znus, of Elizabethport, in the count-y ofUnion, in the State of New Jersey, have invented a new and usefulImprovement in Pumps; and I do hereby declare that the following is afull, clear, and exact description of my improvement, which will enableany person skilled in the art to make and use the same.

In the accompanying drawings, Figure l is a perspective view of myimprovement; Fig. 2 is a side sectional elevation of one of thecylinders; the remaining views show detached parts.

Similar letters of reference indicate corresponding parts in all thefigures.

The cylinder B, piston C, piston rod D, cylinderbottom A, and cylinderhead G, are all of the usual construction; the pistons are worked bybrakes in the usual way; no special description of these part-stherefore is necessary.

H, is the escape pipe, which passes through the head G, and communicateswith the interior of the upper part of the cylinder B.

J, is the supply pipe which passes through the bottom A and communicateswith the interior of the lower part ofthe cylinder B. An ordinary ballvalve closes the upper end of the pipe J, and a similar valve in thepiston C, closes the opening therein, in the usual manner.

My improvement consists in the employment of a loose plate or disk valveF, fitted to and held in place in the upper part of the cylinder, by thepiston rod D. I

The operation is as follows: is a ring or shoulder set in the upper partof the cylinder B, forming a valve seat for the valve F, and when thelatter rests upon its seat (y) a water chamber is thus formed in theupper part of the cylinder B, between the valve F and head G. Pipe H isthe exit aperture of this chamber. The water that remains above thepiston is, by the rise of the latter, caused to lift the valve F, andfill the water chamber. When the piston descends, the valve F closes. Onthe next rise of the piston, the valve F is again lifted, and more waterpressed into the chamber, which causes the contents before introduced tobe forced out through pipe H, in the same manner as in other forcepumps.

I do not claim, broadly, the employment of a water-chamber in the upperpart of the pump cylinder, nor, broadly, the employment of a valvetherein, but

What I do claim as my invention, and desire to secure by Letters Patent,is

The combination of a loose plate or disk valve F, with the piston-rod D,in the upper part of the cylinder B, substantially as and for thepurpose herein shown and described.

HENRY ZEl G.

litnesses SIEBELT B. Franks, GEoRG. C. SCHMIDT.

